From St. Athanasius...

This didn't get posted yesterday for some reasom, so I will repost it this evening.

The Seventh Century From The Saints – 57 – St. Athanasius (Doctor, 296-373)-"Discourse Against the Arians," (Bk. I, ch.1, no. 1, Migne's Patrologia G.,
26:11):

"Those who go off to heretics, and all who leave the [Catholic Roman] Church for heresy, abandon the name of Christ. Those who call these men 'Christians' are in grievous error, since they neither understand Scripture at all nor the faith which it contains..."